import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

import 'na.dart';
import 'gallery.dart';
import 'nativeview.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.red,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;
  String _batteryLevel = 'Unknown battery level.';
  static const platform = MethodChannel('samples.flutter.dev/battery');
  static const platform2 = MethodChannel('cnn');

  static const BasicMessageChannel messageChannel =
      BasicMessageChannel("bbbb", StandardMessageCodec());

  Future<void> _getBatteryLevel() async {
    String batteryLevel;
    try {
      final int result = await platform.invokeMethod('getBatteryLevel');
      // await platform2.invokeMethod('{"msg":"abc"}');
      // platform2.setMethodCallHandler((MethodCall call) async {
      //   String val = call.arguments;
      //   String med = call.method;
      //   batteryLevel = "asdasd'$med'=asdasd$val";
      //   return call.arguments;
      // });

      String resp = await messageChannel.send("aaaaa");
      batteryLevel = "'$resp'Batt!!!ery level at $result % .";
    } on PlatformException catch (e) {
      batteryLevel = "Failed to get battery level: '${e.message}'.";
    }

    setState(() {
      _batteryLevel = batteryLevel;
      _counter += 100;
    });
  }

  void _updateContent() {
    setState(() {});
  }

  void _incrementCounter() {
    setState(() {
      // This call to setState tells the Flutter framework that something has
      // changed in this State, which causes it to rerun the build method below
      // so that the display can reflect the updated values. If we changed
      // _counter without calling setState(), then the build method would not be
      // called again, and so nothing would appear to happen.
      // _counter++;
      _counter += 100;
    });

    // Navigator.push(
    //   context,
    //   MaterialPageRoute(
    //       builder: (context) => const MyGalleryPage(
    //             title: 'aaa',
    //           )),
    // );
  }

  Future<String> messageHandler(parama) async {
    print('messageHandler ' + parama);
    // _naToFlutterText = parama;
    setState(() {
      _batteryLevel = "what?$parama";
    });
    return 'messageHandler flutter return';
  }

  @override
  Widget build(BuildContext context) {
    messageChannel.setMessageHandler(messageHandler);
    // messageChannel.send("fuck you");
    //FlutterBasicMessageChannel FlutterBinaryMessenger

    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.

    const String viewType = '<platform-view-type>';
    // Pass parameters to the platform side.
    final Map<String, dynamic> creationParams = <String, dynamic>{};

    print("hello world");
    TTTWWW tw = TTTWWW(title: const Text("ss"));
    tw.onPlay();
    tw.onCallbakc((value) {
      print("val$value");
    });
    // tw.onCallbakc((value) {
    //   setState(() {
    //     _batteryLevel = value;
    //   });
    // });

    
    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: Text(widget.title),
      ),
      body: Center(
        // Center is a layout widget. It takes a single child and positions it
        // in the middle of the parent.
        child: Column(
          // Column is also a layout widget. It takes a list of children and
          // arranges them vertically. By default, it sizes itself to fit its
          // children horizontally, and tries to be as tall as its parent.
          //
          // Invoke "debug painting" (press "p" in the console, choose the
          // "Toggle Debug Paint" action from the Flutter Inspector in Android
          // Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
          // to see the wireframe for each widget.
          //
          // Column has various properties to control how it sizes itself and
          // how it positions its children. Here we use mainAxisAlignment to
          // center the children vertically; the main axis here is the vertical
          // axis because Columns are vertical (the cross axis would be
          // horizontal).
          mainAxisAlignment: MainAxisAlignment.start,
          children: <Widget>[
            Text(
              'You have pushed $_counter the button this many times:!',
            ),
            Text(
              'Hello????!$_batteryLevel',
              textDirection: TextDirection.ltr,
            ),
            const Text(
              'Frank@????!',
              textDirection: TextDirection.ltr,
            ),
            tw,
            const MyAppBar(title: Text("abc")),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _getBatteryLevel,
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}
